CVE-2020-15180

Severity: critical (CVSS 9.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-27 · updated 2026-06-17
Weakness: CWE-20

Description

A flaw was found in the mysql-wsrep component of mariadb. Lack of input sanitization in `wsrep_sst_method` allows for command injection that can be exploited by a remote attacker to execute arbitrary commands on galera cluster nodes. This threatens the system's confidentiality, integrity, and availability. This flaw affects mariadb versions before 10.1.47, before 10.2.34, before 10.3.25, before 10.4.15 and before 10.5.6.

Affected products

Debian Linux: 9.0, 10.0
Galeracluster Galera Cluster For Mysql: from 5.6 before 5.6.49; from 5.7 before 5.7.31; from 8.0 before 8.0.21 — fixed in 5.6.49, 5.7.31, 8.0.21
MariaDB: from 10.1.0 before 10.1.47; from 10.2.0 before 10.2.34; from 10.3.0 before 10.3.25; from 10.4.0 before 10.4.15; from 10.5.0 before 10.5.6 — fixed in 10.1.47, 10.2.34, 10.3.25, 10.4.15, 10.5.6
percona Xtradb Cluster: before 5.6.49-28.42.2; from 5.7 before 5.7.31-31.45.2; from 8.0 before 8.0.20-11.2 — fixed in 5.6.49-28.42.2, 5.7.31-31.45.2, 8.0.20-11.2

How to fix

Upgrade to a fixed version: Galeracluster Galera Cluster For Mysql 5.6.49, 5.7.31, 8.0.21; MariaDB 10.1.47, 10.2.34, 10.3.25, 10.4.15; percona Xtradb Cluster 5.6.49-28.42.2, 5.7.31-31.45.2, 8.0.20-11.2. Check the vendor advisory for mitigations.

References

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